700R4 and NP205 combo - The 1947 - Present Chevrolet & GMC Truck Message Board Network

1malo68 · 01-07-2011, 07:26 AM

Anybody running this in their Truck and how do you like it?

kieth · 01-07-2011, 11:21 AM

what is a np205 is it a overdrive ?

74chevy4x4 · 01-07-2011, 11:35 AM

NP 205 is the 4X4 Transfer Case. I am now running a 700R4 Overdrive Transmission and an NP 208 Transfer. I Love the difference. After swapping out the TH350 and NP203, the lower first gear is nice and the overdrive is even better.

srhart71 · 01-07-2011, 04:27 PM

Ran it behind a 402BB with 4.10 gears for six years. Loved it. Only reason I am not running it now is a tree fell, flattening the cab. Replacement cab should be on this summer.

KrazyRay · 01-07-2011, 07:03 PM

If you want to run the 700r4/205 in the 67-72 trucks, it works great because you can leave the t case and drive lines alone and simply move the engine foward a couple of inches. This also gives you more room for an HEI.

67swb72klb · 01-08-2011, 02:25 PM

what about a 200r4 will they work also ?

*72longbed* · 01-08-2011, 04:31 PM

I've been running the NP205 - 700R4 for 6 or 7 years now and there is a world of difference between this setup and the old Turbo 350. Having an overdrive and the ability to regulate the shift points (Bowtie Overdrives transmission linkage gives you that adjustability) is awesome!!

I went with the Level II 700R4 because it has extra heavy duty internals over their standard build. I had them (BTO) install the proper output shaft to match the NP205. Very economical to have them (the experts) do it on their own transmission. Came with a great warranty also.

I remember moving my engine forward approximatly 1 3/4". I think most of the new engine and transmission crossmember holes were already drilled in the frame? It was a long time ago, but I'm pretty sure there was minimal drilling.

67swb72klb · 01-08-2011, 04:59 PM

Quote:

Originally Posted by 72longbed

I've been running the NP205 - 700R4 for 6 or 7 years now and there is a world of difference between this setup and the old Turbo 350. Having an overdrive and the ability to regulate the shift points (Bowtie Overdrives transmission linkage gives you that adjustability) is awesome!!

I went with the Level II 700R4 because it has extra heavy duty internals over their standard build. I had them (BTO) install the proper output shaft to match the NP205. Very economical to have them (the experts) do it on their own transmission. Came with a great warranty also.

I remember moving my engine forward approximatly 1 3/4". I think most of the new engine and transmission crossmember holes were already drilled in the frame? It was a long time ago, but I'm pretty sure there was minimal drilling.

so if u buy there 700r4 it wiil come ready to go in w/out buyn a adaper plate for the 205 & how much u wil it cost u think ? yea i was lookn at my motor mount xmember it is in the rear set of holes

*72longbed* · 01-08-2011, 05:06 PM

The best thing to do is call them on their Toll Free number and ask to talk to a Tech guy. Tell them exactly what you have and what you want to do, and they will quote you on a current price for the whole deal.

I can't quote you any prices now because I did mine 6 or 7 years ago. I do remember that these people went out of their way to make sure that I was completely satisfied with the purchase, install, and performance of the transmission. (I did the install here in PA, they are out in CA.)

Their sh%# ROCKS!!

72longbed

KrazyRay · 01-09-2011, 02:35 AM

There is 2 ways to mate the 700r4 to the 205. The best way IMO is to get the $200 advanced adapter shaft. That puts your engine forward 1 3/4 inches. The other way is to buy the spacer that's about 3 inches long from a company in the midwest. This shoves the engine forward 3 inches and I worry about the extra stress on the tail housing with that long spacer. Its about $100.

*72longbed* · 01-09-2011, 09:37 AM

I agree with Ray. At the time I did mine, Bow Tie Overdrives was installing the Advance Adapters shaft at their shop. I think I paid around $139.00 for the shaft plus an install charge. No adapter necessary.

The 1.75" forward is a plus IMO, it gives you more room at the firewall for an HEI ignition, and just makes under the hood work easier.

72

1malo68 · 01-10-2011, 04:59 AM

So let me see if I got this right. I already have the AA 700r to 205 tranny output shaft and the TH 350 tailhousing adapter installed on my freshly built tranny and I still have to move my motor 1.75" forward? Just checkin' because haven't set it in yet. Now that I think about it, that sounds about right. Sounds like a perfect reason to go with electric fans.

KrazyRay · 01-10-2011, 12:00 PM

That is a good reason. You might be able to get a 2wd fan shroud to work, but I think you will have to extend the fan spacer by an inch.

Murphy IRE · 01-10-2011, 06:18 PM

PO installed the 400 sb and the 700r4 (w/205). I love it now, but I went through a lot of headaches. They didn't mount it as forward as they should have! So, the CPP linkage was to short and I had to get it lengthened to about 30", the kits are 27". Also, he didn't extend the front drive shaft and it ate the splines on the yoke and Shaft. With the new linkage, I can finally drop it into 1st Manually. I had to install a low speed torque converter, PO had put in a high stall! My friend has the 350/350 and runs 1200 to 1500 rpm higher at 70mph. So my 4x4 gets better mpg than his C20 (just a little better). So as mentioned, preplanning and measuring is critical. It's hard to work on the distributor too!

s_nova69 · 01-16-2011, 06:32 PM

I put a 700r4 and np205 behind a 500hp 406 in my 78 k20 and it was awesome. I did not move the engine forward but had the drivelines lengthened/shortened. I didnt actually think of moving the engine forward at the time. My truck had 6" w 35's and 4.10 gears and turned 2100 at 65ish on the freeway. I had trouble getting the shift points right where I liked them but finally was able to tune the govenor with a TCI tuning kit. I bought the AA output shaft and aluminum adapter. The only problem I had was that I initially forgot to install the seal on the coupler so my tcase filled with ATF.
I thought the combo worked really well and would recomend it even though the new parts from AA cost a bundle. Phil

72Cheyenne454 · 01-19-2011, 02:30 PM

For those of you that have installed a 700R4 in front of a NP205 transfer case using the Advance Adapter "special" output shaft, have you had clearance issues with the front drive shaft and transmision oil pan.

I thought I had read a post sometime back that mentioned if you were running stock front springs (no lift kit) and used the AA output shaft, you would run into an issue with the CV joint/front shaft coming in to contact with the rear corner of the 700R4 pan.

Can anyone confirm this?

Thanks,

1malo68 · 01-19-2011, 06:00 PM

In the paperwork that you get with the AA output shaft it says exactly that. But I don't know if moving the engine forward 1.75" will help that or not. Seems it should. If you moved the transfer case crossmember back it just might be an issue.

72Cheyenne454 · 01-20-2011, 09:50 PM

Quote:

Originally Posted by 72Cheyenne454

For those of you that have installed a 700R4 in front of a NP205 transfer case using the Advance Adapter "special" output shaft, have you had clearance issues with the front drive shaft and transmision oil pan.

I thought I had read a post sometime back that mentioned if you were running stock front springs (no lift kit) and used the AA output shaft, you would run into an issue with the CV joint/front shaft coming in to contact with the rear corner of the 700R4 pan.

Can anyone confirm this?

Thanks,

Anyone else have first hand experience with this?

Thanks!

KrazyRay · 01-21-2011, 01:30 AM

I don't have first hand experience as mine has a 4" lift, but I think some of the bulky square body cv joints on the driveline could cause that problem. The 72 cv joint is smaller than some of them that I've seen on the later trucks.

*72longbed* · 01-21-2011, 07:48 PM

Just like Ray says, mine has a 4" lift also. Is it close ... yes. Does it hit ... No. I have had my truck "articulated" in 4 wheel drive and the driveshaft has not touched the pan while wheeling.

Is it close? ... yes.

AlaskaMatt · 08-26-2012, 11:28 PM

Dragging this back to the top to see if anyone else can confirm that while tight the clearance is ok when using the advanced adapter shaft.

I am ready to go on this, but am worried about clearance.

71 blazer fwiw

birdistheword · 08-27-2012, 04:56 AM

I just did this swap in my 72 K-10 and it's nice. The truck has a 2.5 inch lift and the space between the front u-joint and trans pan is very close. I would say about 1/2" if that. I bought the Raptor level 3 transmission from PATC for about $2,800 with the shorter tailshaft installed. It also came with a dipstick, TV cable, the bracket for the carb, an oil cooler, and a free t-shirt.

obijuan · 08-27-2012, 07:36 AM

its worse with the larger flanged CV. i used the techpack spacer.

SunSoaked · 08-29-2012, 10:30 PM

So what tailhousing are you using with the 205? Anybody have a photo?

Just to be clear, I'll need X tailhousing AND a longer shaft?

birdistheword · 08-29-2012, 11:17 PM

You don't use a tail housing. You use a stock TH-350 to NP 205 adapter and the transmission tail shaft is actually shorter. Or go the other route and buy the spacer that goes between the transmission and transfer case adapter so you can use the stock transmission tail shaft.

01-07-2011, 07:26 AM	#1
1malo68 Registered User Join Date: Aug 2010 Location: Lost Wages, NV Posts: 201	700R4 and NP205 combo Anybody running this in their Truck and how do you like it?

01-07-2011, 11:21 AM	#2
kieth Registered User Join Date: Sep 2010 Location: Tulsa, Oklahoma Posts: 1,925	Re: 700R4 and NP205 combo what is a np205 is it a overdrive ?

01-07-2011, 11:35 AM	#3
74chevy4x4 Registered User Join Date: Aug 2010 Location: Clarksville, TN Posts: 28	Re: 700R4 and NP205 combo NP 205 is the 4X4 Transfer Case. I am now running a 700R4 Overdrive Transmission and an NP 208 Transfer. I Love the difference. After swapping out the TH350 and NP203, the lower first gear is nice and the overdrive is even better. __________________ 1974 K20 Cheyenne Super, 350ci with Edelbrock Valve Covers, Intake and Carb, COMP CAMs XE268h, Headers from Jeggs, 65K Volt HEI Distributor, Mile Marker Locking Hubs, 700R4 Tranny, NP241C Transfer, A/C, tilt wheel, dual 20 Gal tanks. 2003 Honda VTX-1800C, V&H Big Shots, Kury Hypercharger, grips, pegs, Darkside Goodyear Triple Tread Rear Tire, and Chrome Galor. 2005 Chevy Trailblazer(Momma's Car LoL)

01-07-2011, 04:27 PM	#4
srhart71 Registered User Join Date: Jul 2002 Location: China Grove, NC Posts: 147	Re: 700R4 and NP205 combo Ran it behind a 402BB with 4.10 gears for six years. Loved it. Only reason I am not running it now is a tree fell, flattening the cab. Replacement cab should be on this summer.

01-07-2011, 07:03 PM	#5
KrazyRay Registered User Join Date: Jun 2009 Location: Oroville, CA Posts: 4,827	Re: 700R4 and NP205 combo If you want to run the 700r4/205 in the 67-72 trucks, it works great because you can leave the t case and drive lines alone and simply move the engine foward a couple of inches. This also gives you more room for an HEI.

01-08-2011, 02:25 PM	#6
67swb72klb Registered User Join Date: Dec 2010 Location: livingston co.mi Posts: 2,471	Re: 700R4 and NP205 combo what about a 200r4 will they work also ? __________________ California 65 GTO---Texas 64 burb 283 ---Oklahoma 67 CST SWB BBW wood bed 327 2004r---New Mexico 72 k10 350 350 auto---Georga 72 short step project

01-08-2011, 04:31 PM	#7
72longbed Account Suspended Join Date: Jun 2003 Location: PA Posts: 1,411	Re: 700R4 and NP205 combo I've been running the NP205 - 700R4 for 6 or 7 years now and there is a world of difference between this setup and the old Turbo 350. Having an overdrive and the ability to regulate the shift points (Bowtie Overdrives transmission linkage gives you that adjustability) is awesome!! I went with the Level II 700R4 because it has extra heavy duty internals over their standard build. I had them (BTO) install the proper output shaft to match the NP205. Very economical to have them (the experts) do it on their own transmission. Came with a great warranty also. I remember moving my engine forward approximatly 1 3/4". I think most of the new engine and transmission crossmember holes were already drilled in the frame? It was a long time ago, but I'm pretty sure there was minimal drilling.

01-08-2011, 05:06 PM	#9
72longbed Account Suspended Join Date: Jun 2003 Location: PA Posts: 1,411	Re: 700R4 and NP205 combo The best thing to do is call them on their Toll Free number and ask to talk to a Tech guy. Tell them exactly what you have and what you want to do, and they will quote you on a current price for the whole deal. I can't quote you any prices now because I did mine 6 or 7 years ago. I do remember that these people went out of their way to make sure that I was completely satisfied with the purchase, install, and performance of the transmission. (I did the install here in PA, they are out in CA.) Their sh%# ROCKS!! 72longbed

01-09-2011, 02:35 AM	#10
KrazyRay Registered User Join Date: Jun 2009 Location: Oroville, CA Posts: 4,827	Re: 700R4 and NP205 combo There is 2 ways to mate the 700r4 to the 205. The best way IMO is to get the $200 advanced adapter shaft. That puts your engine forward 1 3/4 inches. The other way is to buy the spacer that's about 3 inches long from a company in the midwest. This shoves the engine forward 3 inches and I worry about the extra stress on the tail housing with that long spacer. Its about $100.

01-09-2011, 09:37 AM	#11
72longbed Account Suspended Join Date: Jun 2003 Location: PA Posts: 1,411	Re: 700R4 and NP205 combo I agree with Ray. At the time I did mine, Bow Tie Overdrives was installing the Advance Adapters shaft at their shop. I think I paid around $139.00 for the shaft plus an install charge. No adapter necessary. The 1.75" forward is a plus IMO, it gives you more room at the firewall for an HEI ignition, and just makes under the hood work easier. 72 Last edited by 72longbed; 01-09-2011 at 09:38 AM.

01-10-2011, 04:59 AM	#12
1malo68 Registered User Join Date: Aug 2010 Location: Lost Wages, NV Posts: 201	Re: 700R4 and NP205 combo So let me see if I got this right. I already have the AA 700r to 205 tranny output shaft and the TH 350 tailhousing adapter installed on my freshly built tranny and I still have to move my motor 1.75" forward? Just checkin' because haven't set it in yet. Now that I think about it, that sounds about right. Sounds like a perfect reason to go with electric fans.

01-10-2011, 12:00 PM	#13
KrazyRay Registered User Join Date: Jun 2009 Location: Oroville, CA Posts: 4,827	Re: 700R4 and NP205 combo That is a good reason. You might be able to get a 2wd fan shroud to work, but I think you will have to extend the fan spacer by an inch.

01-10-2011, 06:18 PM	#14
Murphy IRE Registered User Join Date: Oct 2009 Location: South Denver Metro, CO Posts: 385	Re: 700R4 and NP205 combo PO installed the 400 sb and the 700r4 (w/205). I love it now, but I went through a lot of headaches. They didn't mount it as forward as they should have! So, the CPP linkage was to short and I had to get it lengthened to about 30", the kits are 27". Also, he didn't extend the front drive shaft and it ate the splines on the yoke and Shaft. With the new linkage, I can finally drop it into 1st Manually. I had to install a low speed torque converter, PO had put in a high stall! My friend has the 350/350 and runs 1200 to 1500 rpm higher at 70mph. So my 4x4 gets better mpg than his C20 (just a little better). So as mentioned, preplanning and measuring is critical. It's hard to work on the distributor too!

01-16-2011, 06:32 PM	#15
s_nova69 Registered User Join Date: Jul 2007 Location: slc, ut Posts: 318	Re: 700R4 and NP205 combo I put a 700r4 and np205 behind a 500hp 406 in my 78 k20 and it was awesome. I did not move the engine forward but had the drivelines lengthened/shortened. I didnt actually think of moving the engine forward at the time. My truck had 6" w 35's and 4.10 gears and turned 2100 at 65ish on the freeway. I had trouble getting the shift points right where I liked them but finally was able to tune the govenor with a TCI tuning kit. I bought the AA output shaft and aluminum adapter. The only problem I had was that I initially forgot to install the seal on the coupler so my tcase filled with ATF. I thought the combo worked really well and would recomend it even though the new parts from AA cost a bundle. Phil __________________ Phil '70 Longhorn 421 700r4 tach 4 wheel disc hydroboost daily driver '72 short super build 4wd '72 Suburban LT4 coming soon!!

01-19-2011, 02:30 PM	#16
72Cheyenne454 Registered User Join Date: Apr 2007 Location: San Diego Posts: 457	Re: 700R4 and NP205 combo For those of you that have installed a 700R4 in front of a NP205 transfer case using the Advance Adapter "special" output shaft, have you had clearance issues with the front drive shaft and transmision oil pan. I thought I had read a post sometime back that mentioned if you were running stock front springs (no lift kit) and used the AA output shaft, you would run into an issue with the CV joint/front shaft coming in to contact with the rear corner of the 700R4 pan. Can anyone confirm this? Thanks,



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01-19-2011, 06:00 PM	#17
1malo68 Registered User Join Date: Aug 2010 Location: Lost Wages, NV Posts: 201	Re: 700R4 and NP205 combo In the paperwork that you get with the AA output shaft it says exactly that. But I don't know if moving the engine forward 1.75" will help that or not. Seems it should. If you moved the transfer case crossmember back it just might be an issue.

01-21-2011, 01:30 AM	#19
KrazyRay Registered User Join Date: Jun 2009 Location: Oroville, CA Posts: 4,827	Re: 700R4 and NP205 combo I don't have first hand experience as mine has a 4" lift, but I think some of the bulky square body cv joints on the driveline could cause that problem. The 72 cv joint is smaller than some of them that I've seen on the later trucks.

01-21-2011, 07:48 PM	#20
72longbed Account Suspended Join Date: Jun 2003 Location: PA Posts: 1,411	Re: 700R4 and NP205 combo Just like Ray says, mine has a 4" lift also. Is it close ... yes. Does it hit ... No. I have had my truck "articulated" in 4 wheel drive and the driveshaft has not touched the pan while wheeling. Is it close? ... yes. Last edited by 72longbed; 01-21-2011 at 07:48 PM.

08-26-2012, 11:28 PM	#21
AlaskaMatt Registered User Join Date: Apr 2010 Location: AK Posts: 198	Re: 700R4 and NP205 combo Dragging this back to the top to see if anyone else can confirm that while tight the clearance is ok when using the advanced adapter shaft. I am ready to go on this, but am worried about clearance. 71 blazer fwiw __________________ Thanks, Matt My Website

08-27-2012, 04:56 AM	#22
birdistheword Registered User Join Date: Apr 2011 Location: Tacoma, Washington Posts: 236	Re: 700R4 and NP205 combo I just did this swap in my 72 K-10 and it's nice. The truck has a 2.5 inch lift and the space between the front u-joint and trans pan is very close. I would say about 1/2" if that. I bought the Raptor level 3 transmission from PATC for about $2,800 with the shorter tailshaft installed. It also came with a dipstick, TV cable, the bracket for the carb, an oil cooler, and a free t-shirt.

08-27-2012, 07:36 AM	#23
obijuan Registered User Join Date: Jun 2012 Location: cibolo tx Posts: 1,033	Re: 700R4 and NP205 combo its worse with the larger flanged CV. i used the techpack spacer.

08-29-2012, 10:30 PM	#24
SunSoaked Registered User Join Date: Dec 2011 Location: Yuma Arizona Posts: 1,525	Re: 700R4 and NP205 combo So what tailhousing are you using with the 205? Anybody have a photo? Just to be clear, I'll need X tailhousing AND a longer shaft?

08-29-2012, 11:17 PM	#25
birdistheword Registered User Join Date: Apr 2011 Location: Tacoma, Washington Posts: 236	Re: 700R4 and NP205 combo You don't use a tail housing. You use a stock TH-350 to NP 205 adapter and the transmission tail shaft is actually shorter. Or go the other route and buy the spacer that goes between the transmission and transfer case adapter so you can use the stock transmission tail shaft.

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